United States Biotechnology & Medical Research

Clene Inc. (CLNN)

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Over the past 90 days, Clene Inc. experienced significant insider selling, totaling approximately $1.25 million in net value. Transactions were primarily driven by Chidozie Ugwumba and Symbiosis II LLC, a former board member. These sales occurred alongside the company's recent earnings report, while the stock price has declined by 11.1% over the same period.
Ticker: CLNN Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Sale 12 May 2026
Value US$186,287.72 | Price 481.65 | Shares 17,624 (+28.3%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-13 2026-05-12 S Sale
2.5
Ugwumba Chidozie
Large shareholder
17,624 +28.3%
481.65
US$186,288 		17,624 +28.3% 481.65 US$186,288
2026-05-13 2026-05-11 S Sale
2.5
Ugwumba Chidozie
Large shareholder
23,891 +29.5%
470.41
US$1,957,278 		23,891 +29.5% 470.41 US$1,957,278
2026-05-11 2026-05-11 PrS Proposed sale
Symbiosis II LLC

Former Board Member
67,986
55.51
US$3,574,764 		67,986 55.51 US$3,574,764
2026-05-05 2026-05-04 S Sale
2.5
Ugwumba Chidozie
Large shareholder
72,884 -26.8%
6.80
US$495,611 		72,884 -26.8% 6.80 US$495,611
2026-05-04 2026-05-04 PrS Proposed sale
Symbiosis II LLC

Former Board Member
41,260
6.55
US$270,381 		41,260 6.55 US$270,381
2026-05-05 2026-05-01 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,795 -2.1%
6.01
US$34,828 		5,795 -2.1% 6.01 US$34,828
2026-04-30 2026-04-30 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,736 -2.0%
6.08
US$34,875 		5,736 -2.0% 6.08 US$34,875
2026-04-30 2026-04-29 S Sale
2.5
Ugwumba Chidozie
Large shareholder
12,170 -4.1%
5.63
US$68,517 		12,170 -4.1% 5.63 US$68,517
2026-04-30 2026-04-28 S Sale
2.5
Ugwumba Chidozie
Large shareholder
1,591 -0.5%
5.90
US$9,387 		1,591 -0.5% 5.90 US$9,387
2026-04-28 2026-04-28 PrS Proposed sale
Symbiosis II LLC

Former Board Member
56,916
5.90
US$335,804 		56,916 5.90 US$335,804
2026-04-22 2026-04-21 S Sale
2.5
Ugwumba Chidozie
Large shareholder
61,345 -17.1%
6.14
US$376,658 		61,345 -17.1% 6.14 US$376,658
2026-04-22 2026-04-20 S Sale
2.5
Ugwumba Chidozie
Large shareholder
4,318 -1.2%
6.12
US$26,426 		4,318 -1.2% 6.12 US$26,426
2026-04-17 2026-04-17 S Sale
2.5
Ugwumba Chidozie
Large shareholder
25,040 -6.5%
6.43
US$161,007 		25,040 -6.5% 6.43 US$161,007
2026-04-17 2026-04-16 S Sale
2.5
Ugwumba Chidozie
Large shareholder
7,748 -2.0%
6.40
US$49,587 		7,748 -2.0% 6.40 US$49,587
2026-04-17 2026-04-15 S Sale
2.5
Ugwumba Chidozie
Large shareholder
6,374 -1.6%
6.48
US$41,304 		6,374 -1.6% 6.48 US$41,304
2026-04-15 2026-04-15 PrS Proposed sale
Symbiosis II LLC

Former Board Member
104,825
6.39
US$669,832 		104,825 6.39 US$669,832
2026-04-06 2026-04-02 S Sale
2.5
Ugwumba Chidozie
Large shareholder
24,925 -5.8%
4.81
US$119,889 		24,925 -5.8% 4.81 US$119,889
2026-04-01 2026-04-01 S Sale
2.5
Ugwumba Chidozie
Large shareholder
4,278 -1.0%
4.97
US$21,262 		4,278 -1.0% 4.97 US$21,262
2026-03-31 2026-03-31 S Sale
2.5
Ugwumba Chidozie
Large shareholder
67,991 -13.6%
4.88
US$331,796 		67,991 -13.6% 4.88 US$331,796
2026-03-31 2026-03-30 S Sale
2.5
Ugwumba Chidozie
Large shareholder
15,536 -3.0%
5.10
US$79,234 		15,536 -3.0% 5.10 US$79,234
2026-03-31 2026-03-27 S Sale
2.5
Ugwumba Chidozie
Large shareholder
17,470 -3.3%
4.75
US$82,982 		17,470 -3.3% 4.75 US$82,982
2026-03-26 2026-03-26 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,319 -1.0%
5.40
US$28,723 		5,319 -1.0% 5.40 US$28,723
2026-03-26 2026-03-25 S Sale
2.5
Ugwumba Chidozie
Large shareholder
7,098 -1.3%
5.50
US$39,039 		7,098 -1.3% 5.50 US$39,039
2026-03-31 2026-03-24 PrS Proposed sale
Symbiosis II LLC

Former Board Member
30,518
4.89
US$149,233 		30,518 4.89 US$149,233
2026-03-26 2026-03-24 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,492 -1.0%
5.78
US$31,744 		5,492 -1.0% 5.78 US$31,744
2026-03-24 2026-03-24 PrS Proposed sale
Symbiosis II LLC

Former Board Member
82,212
5.80
US$477,000 		82,212 5.80 US$477,000
2026-02-05 2026-02-03 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,559 -1.0%
4.10
US$22,792 		5,559 -1.0% 4.10 US$22,792
2026-02-02 2026-02-02 S Sale
2.5
Ugwumba Chidozie
Large shareholder
3,800 -0.7%
4.04
US$15,352 		3,800 -0.7% 4.04 US$15,352
2026-02-02 2026-01-30 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,686 -1.0%
4.13
US$23,483 		5,686 -1.0% 4.13 US$23,483
2026-02-03 2026-01-29 PrS Proposed sale
Symbiosis II LLC

Prior board member
60,842
4.37
US$265,731 		60,842 4.37 US$265,731
2026-02-02 2026-01-29 S Sale
2.5
Ugwumba Chidozie
Large shareholder
15,284 -2.6%
4.32
US$66,027 		15,284 -2.6% 4.32 US$66,027
2026-01-28 2026-01-28 S Sale
2.5
Ugwumba Chidozie
Large shareholder
8,717 -1.5%
4.91
US$42,800 		8,717 -1.5% 4.91 US$42,800
2026-01-28 2026-01-27 S Sale
2.5
Ugwumba Chidozie
Large shareholder
4,139 -0.7%
5.08
US$21,026 		4,139 -0.7% 5.08 US$21,026
2026-01-28 2026-01-26 S Sale
2.5
Ugwumba Chidozie
Large shareholder
6,418 -1.1%
5.02
US$32,218 		6,418 -1.1% 5.02 US$32,218
2026-01-23 2026-01-23 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,556 -0.9%
5.27
US$29,280 		5,556 -0.9% 5.27 US$29,280
2026-01-23 2026-01-22 S Sale
2.5
Ugwumba Chidozie
Large shareholder
12,665 -2.0%
5.32
US$67,378 		12,665 -2.0% 5.32 US$67,378
2026-01-21 2026-01-21 S Sale
2.5
Ugwumba Chidozie
Large shareholder
12,119 -1.9%
5.05
US$61,201 		12,119 -1.9% 5.05 US$61,201
2026-01-21 2026-01-20 S Sale
2.5
Ugwumba Chidozie
Large shareholder
12,432 -1.9%
4.80
US$59,674 		12,432 -1.9% 4.80 US$59,674
2026-01-21 2026-01-16 S Sale
2.5
Ugwumba Chidozie
Large shareholder
7,923 -1.2%
5.13
US$40,645 		7,923 -1.2% 5.13 US$40,645
2026-01-16 2026-01-15 S Sale
2.5
Ugwumba Chidozie
Large shareholder
12,563 -1.9%
5.10
US$64,071 		12,563 -1.9% 5.10 US$64,071
2026-01-16 2026-01-14 S Sale
2.5
Ugwumba Chidozie
Large shareholder
19,621 -2.9%
5.12
US$100,460 		19,621 -2.9% 5.12 US$100,460
2026-01-16 2026-01-13 S Sale
2.5
Ugwumba Chidozie
Large shareholder
26,105 -3.7%
4.89
US$127,653 		26,105 -3.7% 4.89 US$127,653
2026-01-13 2026-01-13 B Purchase
2.3
MATLIN DAVID J
Non-Executive Director
33,333 +7.5%
6.50
US$216,664 		33,333 +7.5% 6.50 US$216,664
2026-01-12 2026-01-12 S Sale
2.5
Ugwumba Chidozie
Large shareholder
32,705 -4.4%
5.50
US$179,878 		32,705 -4.4% 5.50 US$179,878
2026-01-12 2026-01-09 S Sale
2.5
Ugwumba Chidozie
Large shareholder
9,075 -1.2%
6.27
US$56,900 		9,075 -1.2% 6.27 US$56,900
2026-01-12 2026-01-08 S Sale
2.5
Ugwumba Chidozie
Large shareholder
3,195 -0.4%
6.09
US$19,458 		3,195 -0.4% 6.09 US$19,458
2026-01-07 2026-01-07 S Sale
2.5
Ugwumba Chidozie
Large shareholder
3,938 -0.5%
6.29
US$24,770 		3,938 -0.5% 6.29 US$24,770
2026-01-07 2026-01-06 S Sale
2.5
Ugwumba Chidozie
Large shareholder
3,111 -0.4%
6.04
US$18,790 		3,111 -0.4% 6.04 US$18,790
2026-01-07 2026-01-05 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,869 -0.8%
5.87
US$34,451 		5,869 -0.8% 5.87 US$34,451
2026-01-02 2026-01-02 S Sale
2.5
Ugwumba Chidozie
Large shareholder
4,015 -0.5%
5.73
US$23,006 		4,015 -0.5% 5.73 US$23,006
2026-01-02 2025-12-31 S Sale
2.5
Ugwumba Chidozie
Large shareholder
13,095 -1.7%
5.81
US$76,082 		13,095 -1.7% 5.81 US$76,082
2025-12-31 2025-12-30 S Sale
2.5
Ugwumba Chidozie
Large shareholder
4,138 -0.5%
6.03
US$24,952 		4,138 -0.5% 6.03 US$24,952
2025-12-31 2025-12-29 S Sale
2.5
Ugwumba Chidozie
Large shareholder
8,096 -1.0%
5.95
US$48,171 		8,096 -1.0% 5.95 US$48,171
2025-12-30 2025-12-26 S Sale
2.5
Ugwumba Chidozie
Large shareholder
3,350 -0.4%
6.32
US$21,172 		3,350 -0.4% 6.32 US$21,172
2025-12-30 2025-12-24 S Sale
2.5
Ugwumba Chidozie
Large shareholder
1,490 -0.2%
6.27
US$9,342 		1,490 -0.2% 6.27 US$9,342
2025-12-30 2025-12-23 S Sale
2.5
Ugwumba Chidozie
Large shareholder
6,831 -0.8%
6.27
US$42,830 		6,831 -0.8% 6.27 US$42,830
2025-12-23 2025-12-22 S Sale
2.5
Ugwumba Chidozie
Large shareholder
4,367 -1.1%
6.54
US$28,560 		4,367 -1.1% 6.54 US$28,560
2025-12-23 2025-12-19 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,582 -1.4%
6.45
US$36,004 		5,582 -1.4% 6.45 US$36,004
2025-12-18 2025-12-18 S Sale
2.5
Ugwumba Chidozie
Large shareholder
5,816 -1.5%
6.33
US$36,815 		5,816 -1.5% 6.33 US$36,815
2025-12-18 2025-12-17 S Sale
2.5
Ugwumba Chidozie
Large shareholder
2,884 -0.7%
6.61
US$19,063 		2,884 -0.7% 6.61 US$19,063
2025-12-18 2025-12-16 S Sale
2.5
Ugwumba Chidozie
Large shareholder
7,030 -1.7%
6.31
US$44,359 		7,030 -1.7% 6.31 US$44,359
2025-12-18 2025-12-15 S Sale
2.5
Ugwumba Chidozie
Large shareholder
10,580 -2.5%
6.49
US$68,664 		10,580 -2.5% 6.49 US$68,664
2025-12-18 2025-12-12 S Sale
2.5
Ugwumba Chidozie
Large shareholder
7,603 -1.8%
6.79
US$51,624 		7,603 -1.8% 6.79 US$51,624
2025-12-18 2025-12-11 S Sale
2.5
Ugwumba Chidozie
Large shareholder
10,907 -2.5%
6.81
US$74,277 		10,907 -2.5% 6.81 US$74,277
2025-12-18 2025-12-10 S Sale
2.5
Ugwumba Chidozie
Large shareholder
9,921 -2.2%
6.42
US$63,693 		9,921 -2.2% 6.42 US$63,693
2025-12-18 2025-12-09 S Sale
2.5
Ugwumba Chidozie
Large shareholder
15,031 -3.2%
5.95
US$89,434 		15,031 -3.2% 5.95 US$89,434
2025-12-18 2025-12-08 S Sale
2.5
Ugwumba Chidozie
Large shareholder
21,463 -4.4%
5.70
US$122,339 		21,463 -4.4% 5.70 US$122,339
2025-12-18 2025-12-05 S Sale
2.5
Ugwumba Chidozie
Large shareholder
37,235 -7.1%
5.94
US$221,176 		37,235 -7.1% 5.94 US$221,176
2025-12-18 2025-12-04 S Sale
2.5
Ugwumba Chidozie
Large shareholder
72,748 -12.2%
6.73
US$489,594 		72,748 -12.2% 6.73 US$489,594
2025-12-18 2025-12-03 S Sale
2.5
Ugwumba Chidozie
Large shareholder
56,577 -8.7%
7.86
US$444,695 		56,577 -8.7% 7.86 US$444,695
2025-12-05 2025-12-03 PrS Proposed sale
Symbiosis II LLC

Prior Board Member
506,384
7.46
US$3,775,481 		506,384 7.46 US$3,775,481
2025-08-21 2025-08-21 S Sale
2.5
General Resonance LLC
Large shareholder
3,401 -0.5%
5.34
US$18,161 		3,401 -0.5% 5.34 US$18,161
2025-06-04 2025-06-04 S Sale
2.5
General Resonance LLC
Large shareholder
600 -0.1%
4.04
US$2,424 		600 -0.1% 4.04 US$2,424
2025-06-02 2025-06-02 S Sale
2.5
General Resonance LLC
Large shareholder
600 -0.1%
4.12
US$2,473 		600 -0.1% 4.12 US$2,473
2025-05-30 2025-05-30 S Sale
2.5
General Resonance LLC
Large shareholder
410 -0.1%
2.80
US$1,148 		410 -0.1% 2.80 US$1,148
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